Konverter tal til og fra romertal
Numbers above 3,999 use vinculum notation: a line above a numeral multiplies its value by 1,000.
So ICCCXXVII = 1 000 327.
Did you know?
Labels, Not Values
Super Bowl LIX isn't 59 footballs. King Charles III isn't three kings. Star Wars Episode IV isn't the fourth-ranked film. Roman numerals function as metadata — they tell your brain this number is a name, not a quantity. Don't add it. Don't compute it. Just recognize it as a position in a sequence.
Read more →Before Rome: Etruscan Tally Marks
Roman numerals didn't start in Rome. The system evolved from Etruscan tally marks used in central Italy centuries before the Roman Republic. The stroke I for one finger, V for an open hand, X for two hands crossed — these were counting gestures turned into written symbols. Rome adopted and formalized what was already a working system.
Read more →Hvor stammer romertal fra?
Man mener, at romertal stammer fra håndsignaler og tællestreger. Stregen I repræsenterer en finger, V repræsenterer åbningen mellem tommelfinger og fingre for fem, og X repræsenterer krydsede hænder for ti. Bogstaverne L, C, D og M stammer fra ændringer af græske bogstaver som chi, theta og phi til at repræsentere 50, 100, 500 og 1.000. Over tid blev disse mærker til de latinske bogstaver, folk kender i dag. Der er ingen 0 i det romerske alfabet, da begrebet tallet 0 først blev fuldt udviklet, efter at Indien opfandt det omkring 600 e.Kr. / 10600 HE.